1、SIZE CHECK: This is a 1/2in NPT male pipe thread x 1/2in NPT female pipe thread brass pipe fitting adapter. NPT thread size refer to size of the thread, not equal to Length or Width of the fitting measured by common tools like tape measure or vernier caliper 2、SAFE TO USE: 1/2in brass pipe adapter fitting meet specifications for ASTM B584 and for ASME or for ANSI B16. These brass pipe extension fittings can withstand rated up to 212℉/300 PSI and long period of wear and tear 3、LONG LASTING: 1/2in to 1/2in brass pipe fitting adapter is more long lasting than iron and iron galvanized pipe fittings as 1/2in brass nipple extension fittings are made of solid brass for strong erosion resistance, low magnetic permeability and long service life 4、WIDE APPLICATION: Complete the pipe connecting work with 1/2in brass pipe adapter fittings. These fittings would provide quick connecting solution for pipe to pipe, pipe to fitting. They can served well as pipe extension connectors for shower head, tub spout, outlets, plumbing line. These brass plumbing pipe fitting adapters can also used with grease, fuels, low pressure and natural gas, refrigeration, instrumentation and hydraulic systems in low and medium pressure pipe line connections 5、PACKAGE INCLUDE: There are a total of 10pcs of 1/2in male pipe x 1/2in female pipe NPT brass pipe fitting adapter, enough for you to use, meet your needs well